My Part Builder
Make one collection. Move its objects between parts. Check your counts, keep an idea and try another split.
Choose a whole, then make a collection.
Kept idea
No kept idea yet.
Compare my plans
Grown-up help
Every counter is one virtual object with one current part. The counts are supplied workspace feedback, not an independent assessment or grade. A new collection is distinct from moving the existing objects; equal quantities do not prove the same original objects. Zero is a legitimate empty part or whole. Use safe pieces or the paper twin for physical work, named honestly.
Tab to each object. Enter/Space moves it to the next part; Left/Right moves to a neighbouring part. You can direct someone else's clicks. The mathematical choices and physical acts stay distinct. All ideas are temporary in this page's memory; no account, upload, storage service or API assistant. Reloading loses them. Parts choice applies when making a new collection. An adult can record actual support and a smaller sample.
Teacher guide · Sources and rights. Original code © NeuroForgeIO Pty Ltd2026, Apache-2.0; education/drawings CC BY4.0.